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? 9:23
https://www.youtube.com/watch?v=YubSrHE7WFc
Dec 7, 2012 - Uploaded by eric hatch
I had pretty much decided to throw it away since the cost to fix it by a ... Fixing a broken Samsung Microwave ...

SE is an error code for a shorted keypad, although the keypad might not really be shorted.

Unplug the oven for a few minutes to see if it clears the error code. If not, then leave it unplugged over night. If the problem persists, then you probably do have a shorted membrane switch on the keypad.

Sorry but the -se- error code from the manual means:
An error of the oven may cause
low performance and problems
in safety. Stop using the oven
immediately.
Call local SAMSUNG service
centre.
Look for the 1-800 number on the back and give them a call.